Loom mechanism



March 17 1931. c ss IJQ'YKMi-fi LOOM MECHANISM Filed June 27, 1930 7774 E Z .flllllll 204/44 CH/L DRESS,

ATTORNEY.

Fatented Mar. 17, 1931 UNITED STATES PATENT OFFICE DONAL CHILDRESS, OF GAFFNEY, SOUTH CAROLINA, ASSIGNOR OF ONE-HALF TO HARRY L. FRIEZE AND ONE-HALF TO P. E. MORGAN,

CAROLINA BOTH OF GAIEFNEY, SOUTH rocivr MECHANISM Application filed June 27', 1930. Serial No. 464,397.

My invention relates to improvements in jacquard or dobby heads for looms.

The invention is shown as applied to the jacquard head as illustrated in United States Letters Patent No. 57 7,744, for the purpose of illustration only, as the invention may be embodied in any jacquard or dobby head, wherein pivoted levers are employed for operating the same.

An important object of the invention is to provide a universal joint between the reciprocatory operating rod and swinging lever, which will permit of the tree and proper action of these parts, and which is adjustable to compensate for wear between the pivoted arts. 7

A further object of the invention is to provide a device of the above mentioned caracter having means for maintaining the relatively movable parts properly lubricated.

In the accompanying drawings, forming a part of this specification, and in which like numerals are employed to designate like parts throughout the same,

Figure 1 is a side elevation of the jacquard head shown in Patent No. 577,744, with my invention applied thereto,

Figure 2 is a central vertical longitudinal section through the ball and socket joint embodied in the invention, and

Figure 3 is a side elevation of the same,

L ,2 showing a sllghtly modified torm O1 lever recelvmg socket.

The reference character B designates a Li vertically swinging lever which operates the grill frame and D is a vertically swinging lever which operates the card cylinder. If desired, the invention may also be applied to the mechanism shown in Figure 2 of said patent, wherein a third lever K is employed to operate the second grifi frame. The levers B and D swing in vertical planes, which are substantially parallel.

The numeral 5 designates a rotary operating shaft, carrying cranks 6 and T, which rotate in vertical planes at a right angle to the planes of movement of the levers B and D.

The numerals 8 and 9 designate substantially vertical reciprocatory rods which are suitably pivoted at their lower ends to the the tubular casing 11 has a spherically curved portion 13, which leads at its lower end into a cylindrical screw-threaded portion 14. The spherically curved portion 13 projects radially inwardly beyond the screw-threaded cylindrical portion 14, as shown. The socket element further comprises a cylindrical screw-threaded plug 15, adapted for insertion within the cylindrical screw-threaded bore portion 14 and has a spherically curved recess 16, disposed opposite the spherically curved portion 13. The plug 15.may thus be longitudinally adjusted within the casing 11 by turning the same and it is clamped in the selected adjusted position by means of a check or look nut 17, engaging the screw threaded end of the plug and the end of the casing 11, as shown. This check nut has radial openings 18 for receiving portions of a spanner wrench or other suitable tool. The plug 15 is provided with a tubular extension 19, having a screw-threaded longitudinal bore 20, for receiving the upper screwthreaded end of the rods 8 and 9. These screw-threaded ends of the rods also preferably carry lock nuts 21. The spherically curved portion 18 of the casing-11 is provided with an annular groove 22, for receiving lubricant through a radial port 23, provided with a check valve controlled plug 24. The plug is of the usual construction, which will permit of the forcing of grease or lubricant into and through the port 23 and will prevent the discharge of the lubricant-from the plug.

The numeral 25 designates the ball'element of the joint, which is arranged within the casing 11 and has its upper portion engaging thespherically curved portion or surface 13, and its lower portion engaging the spherically curved surface 16. A connecting stem 26 is preferably formed integral with the ball element and operates Within the upwardly flaring mouth 12. This stem has an upper cylindrical screw-threaded portion 27, while a portion of the stem beneath the screwthreaded portion preferably tapers downwardly towardthe ball element, thus increasing the extent of movement of the same. The ball element 25 is preferably formed of drop forgesteel. ,7

The'num'eial 28' designates a lever receiving yoke, having an opening or recess 29 to receive the levers B and D. The top of the yoke has screw-threaded openings 30 for receiving clamp bolts 31 or the like, At its bottom, the yoke 28 has a depending boss 31, preferably formed integral therewith, having-a screw-threaded opening 32 to receive the'upper-serew-threaded-end 27 of the stem 2 6, such: upper screw-threaded end carrying a lock nut 33', shown. in the form of the invention as shownin Figures 1 and 2, the yoke 2-8' is shown as having its longitudinal a-ki's a rranged'atastraigl'i't angle to the longitndinal axis of' 't he-s-tem 26. However, it is frequently advantageous to have the longitutl'ina l'axisofi the yoke inclined with respect to: the longitudinal axis of the stem 26. When this is desired, as shown in Figure 3, the boss '3l has its longitudinal axis inclined wi-th'res'pe'ct to the longitudinal aXis of the yoke 29;

in view ottlleforegoing description, it is obvious that-the reciprocatory movements of the-rods '8 and:'Q 'are imparted to the levers B andeD, the ball and socket joints permitting universal movement between the stem 26fiand the i'ecilriroca-tory rods. When any perceptible wear occurs'b'etween the ball'element QSan-d the-surfaces 13 and16,'the same may be taken up'hy -'the 'adjustmentor turning of the plug 15'. This is an important featurezofthe invention, as lost motion be tween these; parts would materially afi'ect the proper operation otthe mechanism- The relatively movable parts are maintained properly lubricated-bythegrease within the annulargroove '22; The diameter of the screw threaded bore '14 is slightly larger than the: diameter of-the ballelement, whereby the ball element is placed in position by passing-the same through thelower end of the-bore.

It-is-to be=understood-that the form of my invention, herewit-h. shown and described, is tov be taken as a preferred example of the same, and that various changes-in the shape, size-and. arrangement of parts, may be resorted to, without departing-from the spirit of my invention, or the scope of the subjoined claims.

7 Having thus described my invention, I (Slaii'n;" I r The. combination with. loommechanism including a swinging lever, an operating'rod for tli'elever, aball and socket joint between the rod and lever, said joint comprising a casing having a bore, said bore having a screw-threaded part and a spherically curved part, a screw-threaded plug adjustably mounted within the screw-threaded part of the. bore and h ng a spherically curved part, and a ball element arranged within the casing bet-wee: the spherically curved part of the casing and the spherically curved part of the plug, and means for connecting the ball element with the lever.

2. The. combination with a loom mechanismincluding a swinging lever, of an operating rod for the lever, a rotary element connected with the rod to drive the same, and a universal joint between the rod and lever, said joint including a tubular casing having an upwardly flaring mouth, and a cylindrical screw-threaded bore beneath the mouth and spherically curved part between the mouth and screw-threaded bore, a screw- :hreaded plug adjust-ably mounted within the screw-threaded bore and having a spherically curved part at its end, a ball element arranged within the casing and held between the spherically curved parts, a stem rigidly connected with the ball element and tapering downwardly and extending through the upwardly flaring mouth, and a yoke mounted upon the lever and connected with the stem.

3. The combination with a loom mechanism including a swinging lever of an operating rod for the lever, a rotary driving element. connected with the rod, and a uniersal jointbetween the rod and lever, said jointcomprising a tubular casing having a bore and a spherically curved portion, said spherically curved portion being provided with an annular groove for receiving a lubricant, means whereby a lubricant may be fed into the annular groove, a plug inserted within the bore, a ball element mounted within the casing between the spherically curved part and the plug, a stem connected with the ball element, and means to connect the stem with the lever.

In testimony whereof I ZIlllX my signature.

DONAL CHI-LDRESS. 

